Results 1 to 20 of 32
Thread: 4.8l/5.3l swap in my 1998 ta??
-
06-22-2010, 09:20 AM #1
4.8l/5.3l swap in my 1998 ta??
i was wondering if anybody out there has ever swapped a 5.7 LS1 motor with a 4.8L or a 5.3L truck motor?i have a 1998 trans am with the LS1 5.7,6 spd,the aluminum block and heads are ruined,and it's costing me $2800 for another motor.i can buy a 4.8L or a 5.3L from a friend for around $500.i know its probably not a smart thing to do but it would save me over $2000.i also have the LG G5X1 cam that i would be changing,the LS7 roller lifters,LS2 timing chain,the comp cam hardened push rods and headers.any info would be greatly appreciated
-
06-22-2010, 09:44 AM #2
As far as i know they all the same mounts, i dont see why it wouldnt work
-
06-22-2010, 09:47 AM #3
what about the 6.0 block as well? I have seen them for around 800 on up
-
06-22-2010, 10:02 AM #4
- Join Date
- Oct 2009
- Location
- The Woodlands/spring/houston
- Posts
- 2,142
pewter- 99 trans am
should work....swap the intake though since the truck intake wont clear the cowl..
-
06-22-2010, 10:16 AM #5
- Join Date
- Aug 2005
- Location
- Staten Island, NY
- Posts
- 258
2007 Cadillac Escalade- 98 Camaro SS, 09 G8 GT
Alot of people have done it already (on the other board). I'm installing a 5.3 in my 00' TA and putting a turbo on it.
1998 Sebring Silver Camaro SS Convertible
Cammed, Geared, Stalled and soon to be blown via F1-C
2009 Stryker Blue Pontiac G8 GT
Kook's 1 7/8's LTH's and catted X, Pypes A/B, Vararam, Tune
2007 Black Raven Cadillac Escalade
Vararam, Leveling Kit, 33's
-
06-22-2010, 11:59 AM #6
thank you very much guys.looks like thats what i'll be doing.i have an LS6 intake on mine so i'd be swapping that on the new motor also.gonne be going with the 5.3L or the 6.0L
-
06-22-2010, 12:04 PM #7
- Join Date
- Aug 2005
- Location
- Staten Island, NY
- Posts
- 258
2007 Cadillac Escalade- 98 Camaro SS, 09 G8 GT
If you plan on adding boost down the road, go with the 5.3. If you drop a set of stock 6.0 heads on them the compression drops to 8.6:1. Plenty of guys pushing 550 rwhp with these 5.3's all day long.
-
06-22-2010, 12:17 PM #8
thx deezl..but why couldnt you do that with the 6.0L?and what about my cam,i have the LG G5X1,would that work in the 5.3 or 6.0?
-
06-22-2010, 12:22 PM #9
- Join Date
- Aug 2005
- Location
- Staten Island, NY
- Posts
- 258
2007 Cadillac Escalade- 98 Camaro SS, 09 G8 GT
The LQ4 6.0 already has the 317 heads and the compression is 9.4:1. The LQ9 6.0 also already has the 317 heads but has flat top pistons so the compression is 10:1. The 5.3 will handle the boost alot better because of being able to drop the compression to a very friendly 8.6:1 by adding the 317 heads. Your cam will work fine on the stock 4.8 or 5.3. Just make sure you upgrade the valvetrain accordingly.
-
06-22-2010, 12:32 PM #10
would my cam work in the 6.0L?
-
06-22-2010, 12:33 PM #11
- Join Date
- Aug 2005
- Location
- Staten Island, NY
- Posts
- 258
2007 Cadillac Escalade- 98 Camaro SS, 09 G8 GT
Yes.
-
06-22-2010, 12:41 PM #12
-
06-22-2010, 12:48 PM #13
- Join Date
- Aug 2005
- Location
- Staten Island, NY
- Posts
- 258
2007 Cadillac Escalade- 98 Camaro SS, 09 G8 GT
You already have most of the parts you should upgrade (lifters, hardened pushrods, etc.). The only thing I didn't see listed was upgraded valvesprings. If you go with the 6.0, I would try and sell the 317 heads and get a set of 243 heads. They'll bump your compression about a point. With that setup and a decent intake, you should be good to go.
-
06-22-2010, 06:38 PM #14
My friend went to a 6.0 when his LS1 died from too much boost and it was alot cheaper than fixing up the LS1.
BTW ditch the 98 LS1 ECM and switch to a 99 and up ecm the tuning is much easier, just ask my guy he curses my car. He said the 99's are simpler to mod and tune for certain items. Said some are the same.1998 Trans Am 85k miles.
Bolt ons, MS3 113LSA cam, Circle D Stall, Tune, Modified WS6 style hood, Full Suspension, 6000k HID's, Clear Side Markers w/ Leds, Led 3rd Brake Light and 18" AR Staggered Killer Wheels w/ BFG KDW NT's.- Weekend Toy/DD
02 Trailblazer -Sold
09 Ram 1500 CC - Sold
09 Cobalt SS/TC - Sold
13 ram 1500 LoneStar CC 4x4 - Magnaflow, K&N,and more to come-DD/Toy
-
06-22-2010, 06:39 PM #15
When I get my forged motor I wanna swapp in the 99 and up switchable double ecm which hold 2 tunes. One for maxed out motor and another for the 200 shot.
-
06-24-2010, 10:29 AM #16
-
06-24-2010, 11:06 AM #17
- Join Date
- Aug 2005
- Location
- Staten Island, NY
- Posts
- 258
2007 Cadillac Escalade- 98 Camaro SS, 09 G8 GT
The only issue you may run into with the LQ4 is it's a bit heavier....if your lowered, you may have to swap back to stock springs. An LQ4 with a cam and 243 heads is a very stout combo. Installing will be exactly the same as installing an ls1.....you would just swap accessories. The 1998 is not a bad PCM...there are plenty of guys running wild setups with them, it's just slower than the 99-02 PCM's. If you can get a good LQ4 for a good price, jump on it.
-
06-24-2010, 11:17 AM #18
dont know what i'd do without you..lol.so even though its a 2005,its still the same block?i can get the 6.0 for $1400 can,or buy an ls1 for $2500.or i can buy a 5.3 for $600.i'd go with the 5.3 but if i can get more power with the 6.0 for $900 more,might be worth it??and a better motor??
-
06-24-2010, 11:26 AM #19
and what about my flywheel?it will bolt on the 6.0 crank?and not have any vibrations when its running?
-
06-24-2010, 12:48 PM #20
- Join Date
- Jan 2006
- Location
- Shepherd, Michigan
- Age
- 36
- Posts
- 11,770
blacker than wesleysnipes- 98' trans am
get the lq9. so you can eventually get yourself a nice stroker 402-406
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
For Sale: 1998 Trans Am Convertible with 6.0 swap
By dsherw00d in forum Vehicles For Sale / TradeReplies: 4Last Post: 09-26-2015, 04:42 AM -
Question: 1998 Camaro LS1 swap
By Drewman1298 in forum General HelpReplies: 9Last Post: 07-02-2015, 11:43 AM -
Question: Cam swap on ls-1 (1998-2007)
By Samul91 in forum General HelpReplies: 7Last Post: 08-01-2014, 06:33 AM -
1998 Camaro differential swap
By Dbor1531 in forum DrivetrainReplies: 1Last Post: 06-02-2011, 02:58 AM -
1998 ls1 intake swap fast vs ls6
By wht98 in forum Firebird / WS6Replies: 0Last Post: 09-15-2008, 02:04 PM
Bookmarks